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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /modules/woff2/src/store_bytes.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'modules/woff2/src/store_bytes.h')
-rw-r--r-- | modules/woff2/src/store_bytes.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/modules/woff2/src/store_bytes.h b/modules/woff2/src/store_bytes.h new file mode 100644 index 0000000000..fff3c62f84 --- /dev/null +++ b/modules/woff2/src/store_bytes.h @@ -0,0 +1,71 @@ +/* Copyright 2013 Google Inc. All Rights Reserved. + + Distributed under MIT license. + See file LICENSE for detail or copy at https://opensource.org/licenses/MIT +*/ + +/* Helper functions for storing integer values into byte streams. + No bounds checking is performed, that is the responsibility of the caller. */ + +#ifndef WOFF2_STORE_BYTES_H_ +#define WOFF2_STORE_BYTES_H_ + +#include <inttypes.h> +#include <stddef.h> +#include <string.h> + +#include "./port.h" + +namespace woff2 { + +inline size_t StoreU32(uint8_t* dst, size_t offset, uint32_t x) { + dst[offset] = x >> 24; + dst[offset + 1] = x >> 16; + dst[offset + 2] = x >> 8; + dst[offset + 3] = x; + return offset + 4; +} + +inline size_t Store16(uint8_t* dst, size_t offset, int x) { +#if defined(WOFF_LITTLE_ENDIAN) + *reinterpret_cast<uint16_t*>(dst + offset) = + ((x & 0xFF) << 8) | ((x & 0xFF00) >> 8); +#elif defined(WOFF_BIG_ENDIAN) + *reinterpret_cast<uint16_t*>(dst + offset) = static_cast<uint16_t>(x); +#else + dst[offset] = x >> 8; + dst[offset + 1] = x; +#endif + return offset + 2; +} + +inline void StoreU32(uint32_t val, size_t* offset, uint8_t* dst) { + dst[(*offset)++] = val >> 24; + dst[(*offset)++] = val >> 16; + dst[(*offset)++] = val >> 8; + dst[(*offset)++] = val; +} + +inline void Store16(int val, size_t* offset, uint8_t* dst) { +#if defined(WOFF_LITTLE_ENDIAN) + *reinterpret_cast<uint16_t*>(dst + *offset) = + ((val & 0xFF) << 8) | ((val & 0xFF00) >> 8); + *offset += 2; +#elif defined(WOFF_BIG_ENDIAN) + *reinterpret_cast<uint16_t*>(dst + *offset) = static_cast<uint16_t>(val); + *offset += 2; +#else + dst[(*offset)++] = val >> 8; + dst[(*offset)++] = val; +#endif +} + +inline void StoreBytes(const uint8_t* data, size_t len, + size_t* offset, uint8_t* dst) { + memcpy(&dst[*offset], data, len); + *offset += len; +} + +} // namespace woff2 + +#endif // WOFF2_STORE_BYTES_H_ |